LG VX-8500 Chocolate

Many podcast are available on PBS, ABC ect. I have succesfully downloaded (and listened to) these podcasts on my computer using Media 10, but have been unsuccesful in syncing these podcasts to my chocolate phone (and also my Rio Riot MP3 player) using Media Player 10. I get an error message. Are there any conversion programs out there? Or is it just impossible to do what I am attempting to do.

HVAC Man.